Who at the beginning was one of Islam's most obdurate opponents and poured scorn on the Prophet, after his 40 years of study of religion, philosophy and history frankly said: "Muhammad's religion was unquestionably superior to that of Jesus. He never descended to the wild blasphemies of Christians, nor said that one God was three or three Gods were one. The single pillar of his faith is the One God. Islam owes its being to its founder's decrees and manliness; whereas Christians used the sword to force their religion on others. Oh Lord! if only all nations of Europe would make the Muslims their models." One of Voltaire's heroes was Martin Luther. Yet he wrote that "Luther was not worthy to unloose the latchets of Muhammad's shoes. Muhammad was a great man and a trainer of great men by his example of virtue and perfection. A wise lawgiver, a just ruler, an ascetic prophet, he raised the greatest revolution earth has seen."